EP0560768B1 - Electrovanne a effet marteau permettant des actions d'ouverture ee de fermeture rapides - Google Patents

Electrovanne a effet marteau permettant des actions d'ouverture ee de fermeture rapides Download PDF

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Publication number
EP0560768B1
EP0560768B1 EP91914638A EP91914638A EP0560768B1 EP 0560768 B1 EP0560768 B1 EP 0560768B1 EP 91914638 A EP91914638 A EP 91914638A EP 91914638 A EP91914638 A EP 91914638A EP 0560768 B1 EP0560768 B1 EP 0560768B1
Authority
EP
European Patent Office
Prior art keywords
valve
armature
solenoid
abutment surface
lifter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91914638A
Other languages
German (de)
English (en)
Other versions
EP0560768A1 (fr
Inventor
Anders HÖGLUND
Staffan Lundgren
Mats Rosenquist
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Volvo AB
Original Assignee
Volvo AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Volvo AB filed Critical Volvo AB
Publication of EP0560768A1 publication Critical patent/EP0560768A1/fr
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Publication of EP0560768B1 publication Critical patent/EP0560768B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0668—Sliding valves

Definitions

  • the present invention relates to a solenoid valve of the type described in the preamble of claim 1.
  • a valve of the type described in the preamble of claim 1 is disclosed in DE-C2-36 18 104. It has means to open the valve very rapidly when the solenoid is activated but there are no means to automatically close the valve when the solenoid is deactivated. The valve will stay open until it is closed by manually pressing a return button.
  • the purpose of the present invention is in general to achieve a solenoid valve of the type described by way of introduction which can be made to open very rapidly and stay open during a very short time.
  • the purpose is to achieve a valve which is particularly suited for use in connection with soot sampling measurements when testing internal combustion engines, where one needs to collect a very limited amount of gas during a very short time.
  • the invention is based on the idea of using spring means together with the "hammer effect" which can be achieved by providing a gap between the armature and the valve lifter means.
  • the gap between the abutment surfaces of the armature and the lifter means is so great that the abutment surface of the armature strikes the abutment surface of the lifter means just before the armature has reached its end position, so that it has a maximum kinetic energy.
  • the kinetic energy of the armature is thus transmitted as an impuls to the lifter means.
  • the shock wave is propagated through the lifter means to the valve closure member which is lifted from its seat.
  • the invention provides a simple and inexpensive valve which can be designed so that the period from when the armature strikes the lifter means until the valve opens is not more than a fraction of a millisecond.
  • Fig 1 shows a schematic perspective view of one embodiment of a valve
  • Fig. 2 shows a perspective view of certain details of the valve in Fig. 1 on a larger scale.
  • the valve comprises a cylindrical metal body 1 with a central bore 2 which leads to a valve tube 3, e.g. of stainless steel, which is fixed in the body 1.
  • the tube 3 extends through a second cylindrical metal body 4 and has its lower end in the form of a valve seat 5 for a valve disc 6, which is supported by a valve rod 7, made of Inconel for example, extending through the valve tube 3 and bore 2.
  • the rod 7 is threaded at its upper end and a valve lifter in the form of two internally threaded cylindrical elements 8,9 is screwed onto the rod 7 and is surrounded by a cylindrical guide 10 at the upper end of the bore 2.
  • the solenoid 11 is fixed at the upper end of three cylindrical guide rods 12 (two shown), which extend through bores 12a in the body 1 and are fixed at their lower ends to the lower body 4.
  • the tube 3 is displaceable relative to the body 4 and, with the aid of adjustment and lock means (not shown), the body 1 is displaceable and lockable in various vertical positions on the guide rods 12. In this manner, the distance between the upper surface 13 of the upper valve lifter element 8 and the downwardly directed opposite surface 14 of the solenoid 11 anchor 15 can be adjusted.
  • a radio channel 16 in the body 1 communicates with the bore 2 and forms together with the bore and the tube 3 a gas passage.
  • the bore 2 has an upper portion 21 of greater diameter than its lower portion 22.
  • a first shoulder 23 formed between the portions serves as a support for a washer 24 and an O-ring 25, which serves to seal between the valve rod 7 and the wall of the bore 2.
  • the O-ring 25 can be made of Viton®, which can withstand the hot gases encountered when using the valve for sampling combustion gases.
  • a second shoulder 26 forms a support for a return spring package 27 consisting of a pair of spring washers 28, a helical spring 29 and an intermediate washer 30.
  • a spring package of this design has a non-linear return characteristic curve.
  • the solenoid was activated with a voltage of 170V.
  • the gap between the surface 13 of the valve lifter element and the surface 14 of the armature in the deactivated state of the solenoid was adjusted so that the surface 14 of the armature struck the surface 13 of the element immediately prior to the lower end position of the armature.
  • the masses of the active components, i.e. of the armature 15 and the valve rod 7 with its valve disc 6 and the lifter elements 8,9, were adapted to each other and to the spring package 27 so that the valve opened and closed in circa 0.7 milliseconds with a maximum stroke length of the rod of circa 0.5 millimeters.
  • the valve according to the invention can be mounted on the cylinder head of an internal combustion engine and be used for sampling of combustion gases.
  • the radial bore 16 is coupled to an analyzer unit. It can of course also be used in other contexts where there is a rapidly varying cycle. It is especially suitable for use in periodically recurring measurements with a very small "duty cycle", since the major portion of the total cycle is used for acceleration of the armature and only a very small portion for the impact against the lifter elements.
  • valve rod must in certain cases be able to withstand both high mechanical stresses and high temperatures.
  • the material in the rod is selected with regard to this and to the response time, the sampling environment etc.
  • Conceivable materials are, in addition to steel alloys, Inconel® and titanium.
  • the weight of the intermediate mass is optimized in relation to the weight of the other movable portions of the valve so that the momentum is transferred from the armature to the valve lifter elements with the least possible loss of energy.
  • the weight of the intermediate mass should be equal to the sum of the weight of the other movable portions of the valve. In practice, however, this weight must be adjusted taking into account various losses in the device.
  • the arrangement with an intermediate mass with optimized weight provides advantages in the form of reduced wear, reduced recoil (the intermediate mass should preferably come to a stop after having struck the valve lifter) and reduced risk of deformation.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetically Actuated Valves (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Claims (3)

  1. Electrovanne comprenant un solénoïde, un induit déplaçable (15), un organe de fermeture de vanne agencé pour coopérer avec un siège (5) de vanne, et des moyens de soulèvement (7,8,9) agissant entre l'induit et l'organe de fermeture de vanne, agencés pour transmettre le mouvement de l'induit suivant la direction d'ouverture de la vanne à l'organe de fermeture de vanne, dans laquelle l'induit (15) et les moyens de soulèvement (7,8,9) comportent des surfaces de butées (14,13) qui, dans l'état désactivé du solénoïde (11), sont espacées l'une de l'autre, et sont agencées de telle manière que la surface de butée (14) de l'induit, lorsque le solénoïde est activé, heurte la surface de butée (13) des moyens de soulèvement après un certain déplacement de l'induit, et dans laquelle les moyens de fermeture de vanne sont un disque de vanne (6) reliés de façon fixe à une tige de vanne (7), cette tige étant reliée à une masse (8,9) qui est montée de façon déplaçable dans un guide (10) et comporte une des surfaces de butée (13), caractérisée en ce que des moyens à ressort (27) sont agencés, lesquels, lorsque le solénoïde (11) est désactivé, maintiennent le disque (6) de vanne contre son siège.
  2. Electrovanne selon la revendication 1, caractérisée en ce que les moyens de soulèvement comprennent une masse qui est déplaçable par rapport à l'induit (15) et à la tige (7), qui comporte la surface de butée et une surface supplémentaire disposée pour, après un certain déplacement de la masse, heurter une surface de butée (13) sur une masse (8) reliée de façon solide à la tige.
  3. Electrovanne selon la revendication 1, caractérisée en ce que l'induit (15) est déplaçable entre deux positions d'extrémité et est agencé par rapport à la surface de butée (13) de moyens de soulèvement (7,8,9) de manière que la surface de butée de l'induit heurte la surface de butée des moyens de soulèvement lorsque l'induit, après activation du solénoïde (11), s'est déplacé d'une plus grande partie de la distance séparant ses positions d'extrémité.
EP91914638A 1990-08-01 1991-07-31 Electrovanne a effet marteau permettant des actions d'ouverture ee de fermeture rapides Expired - Lifetime EP0560768B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9002548A SE467017B (sv) 1990-08-01 1990-08-01 Solenoidventil med stoetverkan foer kortvariga oeppnings- och staengningsfoerlopp
SE9002548 1990-08-01
PCT/SE1991/000509 WO1992002749A1 (fr) 1990-08-01 1991-07-31 Electrovanne a effet marteau permettant des actions d'ouverture ee de fermeture rapides

Publications (2)

Publication Number Publication Date
EP0560768A1 EP0560768A1 (fr) 1993-09-22
EP0560768B1 true EP0560768B1 (fr) 1997-01-02

Family

ID=20380074

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91914638A Expired - Lifetime EP0560768B1 (fr) 1990-08-01 1991-07-31 Electrovanne a effet marteau permettant des actions d'ouverture ee de fermeture rapides

Country Status (6)

Country Link
EP (1) EP0560768B1 (fr)
JP (1) JPH06502007A (fr)
AT (1) ATE147143T1 (fr)
DE (1) DE69123983T2 (fr)
SE (1) SE467017B (fr)
WO (1) WO1992002749A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6335693B2 (ja) * 2014-07-08 2018-05-30 Ｋｙｂ株式会社 ソレノイドバルブ

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4008876A (en) * 1975-06-09 1977-02-22 The Singer Company Solenoid valve
JPH0238144Y2 (fr) * 1985-06-01 1990-10-15

Also Published As

Publication number Publication date
JPH06502007A (ja) 1994-03-03
SE467017B (sv) 1992-05-11
SE9002548D0 (sv) 1990-08-01
ATE147143T1 (de) 1997-01-15
EP0560768A1 (fr) 1993-09-22
DE69123983T2 (de) 1997-07-24
SE9002548L (sv) 1992-02-02
WO1992002749A1 (fr) 1992-02-20
DE69123983D1 (de) 1997-02-13

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